SANSUI CD - α 317

Commentary

A CD player with a D/A conversion system equipped with New L. D. C. S.

The D/A converter is equipped with a new linear and direct D/A conversion system based on the Mash method.
In the Mash method, only one reference unit is used and the digital output is obtained by turning on / off according to the digital input information. This reference unit is highly accurate because it uses the frequency generated by crystal oscillation as the reference value. Moreover, since the instantaneous voltage output is only "0" and "1", there is no digit change, and there is no generation of 0 cross distortion or nonlinear distortion in principle.
In addition, S/N is also improved by performing high-order oversampling and noise shaping simultaneously, and high precision is obtained by noise shaping with a differential characteristic in which the distribution form of quantization noise is small in the low band and rapidly increases in the high band.

A discrete balanced low-pass filter is used to balance the output of the D/A converter and prevent unwanted high-frequency components from entering the ground line.

In the power supply section, an independent 5-stabilized power supply is adopted to prevent mutual interference. The power supply for the analog system, digital system, DAC section, servo system and display tube is separately wound to eliminate electrical influence.

Equipped with a digital attenuator, the volume can be adjusted from -20dB to 0 dB with the included remote control.

It is equipped with a COMPUEDIT function that is convenient for recording on tapes, etc., and it automatically programs the music that enters into the A/B side, making it possible to make tapes easily and quickly.
With TIME EDIT, you can select from all songs that can be recorded at a specified time. You can record within the recording time of the tape.
In addition, the Program EDIT function allows you to select songs that can be recorded at a specified time from among preprogrammed songs.

It is equipped with basic functions such as music scan which plays the head part of each track for 10 seconds, random function, repeat function, autospace, timer play, etc.

Model Rating

Type	CD Player
Reading system	Non-contact optical system
Pickup type	High-precision 3-beam semiconductor laser system
Number of revolutions	200 rpm ~ 500 rpm
Number of channels	2 Channel
D/A converter	1-bit linear & direct conversion system (4 dac)
Frequency characteristic	4 Hz to 20 kHz ± 0.3 dB
Harmonic distortion factor (1 kHz)	Not more than 0.005%
Dynamic range	96 dB or more (EIAJ)
Wow and flutter	Measurement limit value or less
Signal-to-noise ratio	100 dB or more (EIAJ)
Output voltage	2V
Rated power consumption	13W
External dimensions	Width 430x Height 100x Depth 300 mm
Weight	4.0kg
Attachment	Wireless Remote Control RS 1150